I´m trying to create that personalized style for hidrography representation (in blue at the Picture); the lines must have 0.2 mm of edge, 3 mm of length, the space between lines must be 1.5 mm and the points, with 0.4 mm of size, must be between in the center of all between-lines spaces. Anybody could teach me how to build that style?
So far, i did this in the Picture. The first point is in the right place. After that everything is in the wrong place: